body {
  margin: 0;
  padding: 0;
  font-family: Arial, sans-serif;
}

.container {
  display: flex;
  margin-top: 0px;
}

.sidebar {
  background-color: #358;
  width: 20vh;
  padding: 20px;
  height:87vh;
}

.sidebar ul li:nth-child(4) {
  background-color: #679;
  border-radius: 10px;
}

.sidebar ul {
  list-style-type: none;
  padding: 0;
  margin: 0;
  margin-top: 100px;
  position: fixed;
  left: 35px;
}

.sidebar ul li {
  margin-bottom: 15px;
}

.sidebar ul li a {
  text-decoration: none;
  color: #eee;
  display: block;
  text-align: center;
  padding: 10px;
}

.head,
.head2 {
  font-size: 25px;
  text-align: center;
  margin-left: 10px;
  font-weight: 700;
}

.kb {
    margin-top: 20px;
}

.kb2 {
    margin-top: 100px;
}

.content {
  flex-grow: 1;
  padding: 20px;
}

.info {
  margin-top: 40px;
  background-color: #f8f8f8;
  padding: 20px;
  margin-left: 60px;
  margin-right: 60px;
  height: auto;
  border-radius: 10px;
}

.grade-table,
.grade-table-fk {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
  margin-bottom: 20px;
}

.grade-table th,
.grade-table td,
.grade-table-fk th,
.grade-table-fk td {
  padding: 8px;
  text-align: center;
  border: 1px solid #ccc;
}

.grade-table th,
.grade-table-fk th {
  background-color: #ddd;
  color: #333;
}

.grade-table tr:nth-child(even),
.grade-table-fk tr:nth-child(even) {
  background-color: #fff;
}

.grade-table tr:nth-child(odd),
.grade-table-fk tr:nth-child(odd) {
  background-color: #f6f6f6;
}

.banner {
  background-color: #003366;
  color: white;
  padding: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 3vh;
}

.banner-title {
  font-weight: bold;
  font-size: 20px;
}
